I believe many of my friends do not know that we can actually post articles to WordPress via email. In the Dashboard- settings – compose interface, you can see the setting options:

But today’s protagonist is not this, but Postie, it is very powerful to extend the function of mail posting. Postie provides many advanced features for creating articles by mail, including assigning categories by name, including pictures and videos, and automatically stripping signatures. Supports IMAP and POP3, as well as SSL communication.